How to Estimate Your Yeast Viability

The way to really measure your viability is in a microscope with methylene blue, no matter what. It's still got some air to it, but because you're looking at a tiny sample, some cells don't stain right,. Everything else is an estimate. Most of the use calculators like yours and Mr. Multi and things like that, there is a viability calculation part in these calculators. Mostly for making starters.